I've not gone for a big upgrade. I bought this one until my upgrade in February. Motorola Defy...
I know it's a strange choice due to locked bootloader however it has many good sides...
800mhz overclockable as far as 1.2ghz.
Flash 10 works.
Slightly larger screen.
Better camera with a FLASH.
Early work on CM7 has started and it's moving quickly. Just needs RIL fixing (just like the Blade lol)
HTC Desire HD rom available for it also.
Also better build quality
Ooo, nice choice, got that nice bigger but not too big screen though I would get rid of that awful Moto Blur pronto lol.
Yeah one of the things the blade lacks is the special smart phone quality feel, the two things i'd be looking for in an upgrade would be long term flash support and build quality.
And locking the bootloader is stupid (moto is now infamous for this), just makes smart hackers and coders more determined to mess with the thing lol